How is’alluvial soil formed ? Why is this soil agriculturally important ?
Alluvial soil is formed by the deposition of sediments brought down by the rivers. This soil is agriculturally important because it is more fertile. It is rich in humus, lime and potash.
Give a reason for each of the following :
(i) Most of Sri Lanka has the Equatorial type of climate.
(ii) Parts of Nepal experience the Arctic type of climate.
(iii) Western coastal plains receive more rainfall than the Eastern coastal plains.
Name two regions in Pakistan where petroleum is found. Which is the largest petroleum producing country in South Asia ?
Given below is the climatic data of a station. Study the table and answer the questions that follow :
Months |
J |
F |
M |
A |
M |
J |
J |
A |
S |
O |
N |
D |
Temperature ° C |
13.7 |
16.6 |
21.6 |
25.5 |
33.2 |
33.5 |
30.8 |
29.8 |
29.2 |
25.5 |
19.6 |
15.2 |
Rainfall in cms |
2.5 |
2.0 |
1.5 |
0.9 |
1.5 |
7.5 |
17.8 |
18.5 |
12.5 |
1.0 |
0.2 |
1.5 |
(i) Calculate the annual range of temperature.
(ii) What is the total rainfall experienced by the station ?
(iii) Which is the driest month ?
(i) Name the different types of iron ore found in India.
(ii) Mention one place in India where iron ore is found.
Name two important agents of erosion. For each, state one method of controlling the erosion caused.